The effect of grain boundary misorientation on intergranular cracking of Ni-16Cr-9Fe in 360{degrees}C argon and high purity water
- Univ. of Michigan, Ann Arbor, MI (United States)
The effect of grain boundary misorientation on the intergranular cracking behavior of pure Ni-16Cr-9Fe was assessed by determining if low angle boundaries (LABs) of coincident boundaries (CSLBs) are more crack resistant than general high angle boundaries (GHABs) in 360{degrees}C CERTs in argon and in high purity water. Annealed samples contained 12-20% CSLBs while CSLB-enhanced samples contained 27-44% CSLBs. Cracked boundary fractions for CSLB-enhanced samples were lower than those for annealed samples. No LABs cracked in either environment. Smaller proportions of CSLBs cracked than GHABs, thus CSLBs are more crack resistant than GHABs. The results indicate that control of grain boundary proportions can improve the intergranular stress corrosion cracking susceptibility of pure Ni-16Cr-9Fe.
- DOE Contract Number:
- FG02-85ER45184
- OSTI ID:
- 48083
- Report Number(s):
- CONF-910808-; TRN: 95:011514
- Resource Relation:
- Conference: 5. international symposium on environmental degradation of materials in nuclear power systems - water reactors, Monterey, CA (United States), 25-29 Aug 1991; Other Information: PBD: 1992; Related Information: Is Part Of Proceedings of the fifth international symposium on environmental degradation of materials in nuclear power systems - water reactors; PB: 995 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
The role of grain boundary chemistry and structure in the environmentally-assisted intergranular cracking of nickel-base alloys. Progress report, [December 1, 1990--November 31, 1993]
UNDERSTANDING THE MECHANISMS CONTROLLING ENVIRONMENTALLY-ASSISTED INTERGRANULAR CRACKING OF NICKEL-BASE ALLOYS